BIOLOGY MIDDLE SCHOOL

A student sets up an experiment according to the date table below.Based on the table,which question was the student most likely investigating ?

Answers

Answer 1
Answer:

Final answer:

The student was likely investigating the distribution of homework nights during a week, and should use a chi-square test of independence to analyze the data.

Explanation:

The student was most likely investigating the nights during which the highest number of students do the majority of their homework with equal frequencies during a week. This question relates to analyzing the distribution of homework nights throughout the week.  To test this hypothesis, the student should use a chi-square test of independence, which compares the observed frequencies with the expected frequencies.

The chi-square test is a statistical method used to determine if there is a significant association between categorical variables. It compares the expected and observed frequencies in a contingency table, assessing whether any deviations are due to random chance or reflect a true relationship.

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Answer 2
Answer:

Answer:

Which is faster, visual or auditory reaction times?

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Below is a segment of a strand of normal DNA:ATA GCA TGA
If the DNA sequences changes to:
AAT AGC ATGA
this would be an example of
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a homozygous mutation
a deletion mutation
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Answers

Answer:

Insertion

Explanation:

this would be insertion because in the first part another A is added which is the cause for there being an extra part at the end and the new A in the first part

Why are objects that fall near Earth’s surface rarely in free fall?

Answers

Answer:

The correct answer is because of gravity and air resistance.

Explanation:

When we speak of free fall, we are referring to something that falls "into the void", and which has no force to oppose such a fall.

Due to the gravity and atmosphere of our planet, this situation is not possible. When an object falls close to our surface, it is very difficult to do it in free fall. Gravity is going to pull this object down, which along with air resistance, will cause the object to fall at a constant speed.
Objects that fall near the Earth's surface are rarely in free fall because the gravity of the Earth is affecting them too much.
Free fall is what most people would call "floating," as an object in free fall has gravity acting upon it enough to hold it in a general distance, but not enough to pull it closer. For example, the moon is in free fall, as the gravity of Earth keeps it close, but isn't strong enough to bring it much closer from where it's at.

What type of data is recorded by the electrocardiogram?

Answers

Answer : The electrocardiogram records the electrical signals of heart.

Explanation :

Electrocardiogram : It is a type graph that records the electrical signals or rate of the heart. It is also called ECGs.

It is a common test that is used to detect the problems in heart and also monitor the status of the heart in many conditions.

During the ECG, sensors (electrodes) that can detect the electrical activity of the heart are attached to the chest.

Hence, the type of data recorded by the electrocardiogram is the electrical signals of heart.

An electrocardiogram records the electrical activity of the heart.

The Rock and mineral fragments in soil come from rock that has been....?

Answers

The answer is rock that has been broken down into small particles into the soil because it travels down the layers of soil.

Hope this helped
you're answer is . B

What is this type of frog? is it poisonous? ​

Answers

Answer: no

Explanation: eat it

Are are many common foods we eat more likely to be acidic or basic?

Answers

It depends what you eat buddy say you drink lemonade thats acidic but something like meat is basic  
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